package com.atguigu.lease.web.admin.service.impl;

import com.atguigu.lease.common.minio.MinioProperties;
import com.atguigu.lease.web.admin.service.FileService;
import io.minio.*;
import io.minio.errors.*;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.web.multipart.MultipartFile;

import java.io.IOException;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.UUID;

@Service
public class FileServiceImpl implements FileService {

    @Autowired
    private MinioClient minioClient;

    @Autowired
    private MinioProperties minioProperties;


    @Override

    public String upload(MultipartFile file) throws ServerException, InsufficientDataException, ErrorResponseException, IOException, NoSuchAlgorithmException, InvalidKeyException, InvalidResponseException, XmlParserException, InternalException {

        //2.判断桶是否存在
        boolean bucketExists = minioClient.bucketExists(BucketExistsArgs.builder()
                .bucket(minioProperties.getBucketName()).build());
        //3.不存在创建桶并设置访问权限
        if (!bucketExists) {
            minioClient.makeBucket(MakeBucketArgs.builder().bucket(minioProperties.getUsername()).build());

            //设置权限
            String policy = """
                    {
                      "Statement" : [ {
                        "Action" : "s3:GetObject",
                        "Effect" : "Allow",
                        "Principal" : "*",
                        "Resource" : "arn:aws:s3:::%s/*"
                      } ],
                      "Version" : "2012-10-17"
                    }
                    """;
            policy.formatted(minioProperties.getBucketName());
            minioClient.setBucketPolicy(SetBucketPolicyArgs.builder().bucket(minioProperties.getBucketName()).config(policy).build());
        }
        //4. 上传对象
        //名称可能重复的问题！ 避免重复 ，避免覆盖！！
        //1.  uuid + 文件名.png 尽量前面拼接！ 以后可视化的时候方便打开文件！！！
        //2.  在桶中创建一个文件夹 / 文件名 -》 objectName  xxx / xx / 对象名即可
        String nowDay = new SimpleDateFormat("yyyyMMdd").format(new Date());
        String objectName = nowDay + "/" + UUID.randomUUID().toString().replace("-", "") + file.getOriginalFilename();
        //minioClient.uploadObject(); //设置传递本地磁盘已有的文件 d f filename -> D:\\xxx.png
        minioClient.putObject(PutObjectArgs.builder()
                .bucket(minioProperties.getBucketName())
                .stream(file.getInputStream(), file.getSize(), -1)
                .object(objectName)
                .contentType(file.getContentType())
                .build());
        //5. 拼接地址 url = 端点 + / + 桶名 + / + objectName
        String url = String.join("/", minioProperties.getEndpoint(), minioProperties.getBucketName(), objectName);
        return url;
    }
}
